Toothbrush



FIG. 1 of the drawings is a three-dimensional view showing the front, top, and right side of a toothbrush constructed according to the invention;

FIG. 2 is a top view of the toothbrush;

FIG. 3 is a front view;

FIG. 4 is a right side view;

FIG. 5 is a left side view;

FIG. 6 is a rear view; and,

FIG. 7 is a bottom view. 

The ornamental design for a toothbrush, as shown. 